The classic cream-colored lace dress featured an a-line shape, high neck, and cap sleeves, and the bride paired the gown, which is already drawing comparisons to her sister's famous wedding look, with a simple veil, jeweled headpiece, and bespoke Manolo Blahnik shoes.

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In November, Deacon was spotted leaving Middleton’s apartment with a large black dress bag in hand, prompting speculation that he would design her gown, but he refused to confirm or deny the gossip.

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"I can never really comment on rumors," he told Hello! Fashion in February. "Until things are confirmed it's just rumors."